package com.softlab.okr.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import javax.sql.DataSource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class DruidConfig {

  private static final Logger log = LoggerFactory.getLogger(DruidConfig.class);

  @Bean
  @ConfigurationProperties(prefix = "spring.datasource")
  public DataSource druidDataSource() {
    return new DruidDataSource();
  }

  /**
   * 注册一个StatViewServlet
   */
  @Bean
  public ServletRegistrationBean<StatViewServlet> druidStatViewServlet() {
    log.info("init Druid Servlet Configuration");

    // org.springframework.boot.context.embedded.ServletRegistrationBean提供类的进行注册.
    ServletRegistrationBean<StatViewServlet> servletRegistrationBean = new ServletRegistrationBean<StatViewServlet>(
        new StatViewServlet(), "/druid/*");

    // 添加初始化参数：initParams
    // 白名单：
    servletRegistrationBean.addInitParameter("allow", "127.0.0.1");
    // IP黑名单 (存在共同时，deny优先于allow) : 如果满足deny的话提示:Sorry, you are not permitted to
    // view this page.
    // servletRegistrationBean.addInitParameter("deny", "192.168.1.73");
    // 登录查看信息的账号密码.
    servletRegistrationBean.addInitParameter("loginUsername", "admin");
    servletRegistrationBean.addInitParameter("loginPassword", "druid");
    // 是否能够重置数据.
    servletRegistrationBean.addInitParameter("resetEnable", "false");
    return servletRegistrationBean;
  }

  /**
   * 注册一个：filterRegistrationBean
   */
  @Bean
  public FilterRegistrationBean<WebStatFilter> druidStatFilter() {

    FilterRegistrationBean<WebStatFilter> filterRegistrationBean = new FilterRegistrationBean<WebStatFilter>(
        new WebStatFilter());

    // 添加过滤规则.
    filterRegistrationBean.addUrlPatterns("/*");

    // 添加不需要忽略的格式信息.
    filterRegistrationBean
        .addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
    return filterRegistrationBean;
  }
}